公开(公告)号：US20150349609A1

公开(公告)日：2015-12-03

申请号：US14292150

申请日：2014-05-30

Applicant: ABB TECHNOLOGY AG

Inventor： Darren Dale Tremelling ,  Ghanshyam Shrestha ,  Patrick Schneider ,  Zhiguo Pan

IPC: H02K9/06 ,  F04D19/00 ,  F04D25/06

CPC classification number: F04D19/002 ,  F04D25/0633 ,  F04D25/0653 ,  F04D29/5806 ,  H02K3/26 ,  H02K9/14 ,  H02K21/22

Abstract: The subject matter described herein includes a fan assembly for cooling an electric machine and an electric machine incorporating such a fan assembly. One exemplary fan assembly according to the subject matter described herein includes a first fan annulus for surrounding a portion of an electric machine. The fan assembly further includes a fan drive circuit for driving the first fan annulus separately from a drive mechanism of the electric machine. The first fan annulus is configured to be, when rotating to cool the electric machine, mechanically disconnected from a housing and a rotor of the electric machine and separated from the housing by radial gap.

Abstract translation: 本文所述的主题包括用于冷却电机的风扇组件和包括这种风扇组件的电机。 根据本文所描述的主题的一个示例性风扇组件包括用于围绕电机的一部分的第一风扇环。 风扇组件还包括用于与电机的驱动机构分开地驱动第一风扇环的风扇驱动电路。 第一风扇环被配置为当旋转以冷却电机时，与电机的壳体和转子机械地断开并且通过径向间隙与壳体分离。